This Action Pump 5QP-SS4 hand-operated piston pump is made with a stainless steel body and PTFE (polytetrafluoroethylene) inner components for resistance to chemicals and corrosion, and is suitable for dispensing flammables, solvents, acids, and other corrosive liquids in a variety of applications. With a maximum viscosity rating of 650 centipoise (cps), this pump delivers 4 oz. of liquid per stroke, for a maximum of 1 gallon per minute (gpm). It comes with 1/2" inlet and outlet ports, a 5.5" suction tube, and a 2-5/8" polyethylene adapter for use with 5, 6 and 7 gallon drums. This piston drum pump is suitable for a wide range of industrial and commercial applications.SpecificationsPumpPiston drum pumpMaterials316 stainless steel body, PTFE seals and pistonFlow rate4 oz. per stroke (1 gpm maximum)Suction port1/2"Discharge port1/2"Maximum temperature140 degrees FMaximum liquid viscosity650 cpsFor use with5, 6, and 7 gallon drumsWeight2 lb.DimensionsOverall length: 15"; Suction tube: 5.5" Pumps use mechanical action to move liquids, gases, or slurries (solids suspended in a liquid or gas). The mechanical action is categorized as either positive displacement (PD) or kinetic. PD pumps capture and release discrete amounts of flow into a chamber and then force it out. Some examples of PD pumps are fuel and oil pumps in cars, pumps in hydraulic systems, and bicycle pumps. Kinetic pumps move liquids, gases, or slurries by transferring energy from the pump"s movement to the flow. They use an impeller to draw the flow in, add energy to the flow, and move it through a volute (a spiral funnel through which the flow moves), and into the system. Some examples of kinetic pumps include centrifugal (the most common pump in industrial applications), in-line pumps, sump pumps, and suction pumps. Energy sources for all types of pumps include wind power, manual operation, electricity, and gasoline or diesel fuel.Action Pump manufactures drum and pail pumps and grease, oil, and lubrication products. The company, founded in 1981, is headquartered in Cary, IL.What"s in the Box?5QP-SS4 piston drum pump5.5" suction hose2-5/8" bung adapter